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Humidifier
Steam Generator Humidifier
The optional humidifier available is a steam generator humidifier type with disposable cylinder. The
humidifier makeup water should be brought to the humidifier through the field connection opening using
1/4” (6.4 mm) copper tubing. A compression fitting is provided at the humidifier.
Humidifier Piping
The optional humidifier offered on Large Ceiling System units is a steam generator type with a
disposable cylinder. The humidifier makeup water should be brought to the humidifier through the field
connection opening using 1/4” (6.4 mm) copper tubing. A compression fitting is provided at the
humidifier.
A shutoff valve (field provided) should be provided outside the unit to allow disconnection for service.
An inline water pressure regulator (field provided) and strainer (field provided) should be installed.
Water pressure should be set between 30 and 80 PSI 128 and 552 kPa).
The humidifier has a drain at the bottom which is factory piped to the main condensate drain line. The
dispersion tube also has a drain line. No additional field piping is required.
NOTICE: Do not use softened water with a steam generating humidifier with
softened water. Also, do not use a hot water source.
Refrigerant Piping Protection
The refrigerant in the system(s) is under high-pressure and this pressure can rapidly increase if the
refrigerant is unintentionally confined (or trapped) between isolation devices such as service valves,
liquid line solenoid valves, expansion valves, etc. If the ambient temperature surrounding the piping
system increases, this may cause the contained refrigerant pressure to increase to an unacceptable
level.
WARNING: This increased pressure can cause piping ruptures,
discharge of refrigerant, pollution, equipment damage, injury or death.
USE EXTREME CAUTION WHEN:
Installing the piping lines and make certain that these isolation devices
are open to prevent unintended containment (trapping) of refrigerant.
When charging a refrigerant system, do not exceed the Design
Pressure indicated on the unit nameplate.
Ensure that pressure has a path to expand when cutting or making
connections, disconnections and piping repairs.
The installing contractor must review the piping system and guard against these possible areas where
the refrigerant could be confined. If the areas cannot be vented and allow the refrigerant to expanded
freely or eliminate pressure increases, the installing contractor must field supply pressure relief devices.
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